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Fairfax County Public Schools (FCPS)
Reply to "Cogat scoring question"
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[quote=Anonymous]The scores are standardized scores following a normal distribution. It is set so a score of 100 means the child was at the 50th percentile. The test has a standard deviation of 16...so a score at 1SD (116) would be at the 84th percentile. 2SD (132) would be at the 98th percentile. 3SD (148) would be 99.9th percentile. The increase in the top score from 150 to 160 doesn't mean that 130 is less of a score, it just means the test can now differentiate between the kids that are scoring so high they were hitting the ceiling on the former test. I'm not sure how they find the composite, I think it is the average of the three subtests. So a child with three very similar scores could have a composite that is at a higher percentile than each individual score was. [/quote]
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